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Pd Supported on Pr-Rich Cerium-Zirconium-Praseodymium Mixed Oxides for Propane and CO Oxidation

hal.structure.identifierIRCELYON-Catalytic and Atmospheric Reactivity for the Environment [CARE]
dc.contributor.authorFAHED, Simon
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierInstitut de chimie des milieux et matériaux de Poitiers [UMR 7285] [IC2MP [Poitiers]]
dc.contributor.authorPOINTECOUTEAU, Rémy
hal.structure.identifierIRCELYON-Microscopie [MICROSCOPIE]
dc.contributor.authorAOUINE, M.
hal.structure.identifierIRCELYON-Catalytic and Atmospheric Reactivity for the Environment [CARE]
dc.contributor.authorBOREAVE, A.
hal.structure.identifierIRCELYON-Catalytic and Atmospheric Reactivity for the Environment [CARE]
dc.contributor.authorGIL, S.
hal.structure.identifierLaboratoire catalyse et spectrochimie [LCS]
dc.contributor.authorBAZIN, Philippe
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDEMOURGUES, Alain
hal.structure.identifierLaboratoire catalyse et spectrochimie [LCS]
dc.contributor.authorDATURI, Marco
hal.structure.identifierIRCELYON-Catalytic and Atmospheric Reactivity for the Environment [CARE]
dc.contributor.authorVERNOUX, P.
dc.date.issued2022
dc.identifier.issn2073-4344
dc.description.abstractEnThe activity of emission control catalysts must be improved in urban mode at low temperatures. One possible way is to tailor the metal-support interaction between platinum group metals (PGMs) and ceria to stabilize small clusters or single atoms, optimizing the utilization of costly PGMs. In this study, a small loading of Pd (<0.2 wt.%) was dispersed on Pr-rich cerium–zirconium–praseodymium mixed oxides (CZP45: Ce0.45Zr0.10Pr0.45O2−x). After the initial calcination at 800 °C, Pd was mainly in the form of dispersed isolated cations which were found to be efficient for low-temperature CO oxidation but inactive for propane combustion. Nevertheless, a pre-reduction step can trigger the formation of Pd nanoparticles and promote the propane oxidation. Pd nanoparticles, formed during the reduction step, coupled with the high oxygen mobility of CZP45, lead to outstanding catalytic activity for propane oxidation starting from 250 °C. However, the re-oxidation of Pd nanoparticles and their partial re-dispersion, promoted by the fast oxygen mobility of the mixed oxide, rapidly deactivate the catalysts in lean conditions.
dc.description.sponsorshipNouveaux composés pour le stockage de l'oxygène, l'oxydation et la réduction en dépollution automobile - ANR-17-CE08-0022
dc.language.isoen
dc.publisherMDPI
dc.subject.enmixed cerium oxides
dc.subject.enemission control
dc.subject.enPd
dc.subject.ensingle-atom catalysts
dc.subject.enbulk oxygen mobility
dc.title.enPd Supported on Pr-Rich Cerium-Zirconium-Praseodymium Mixed Oxides for Propane and CO Oxidation
dc.typeArticle de revue
dc.identifier.doi10.3390/catal12080827
dc.subject.halChimie/Catalyse
dc.subject.halSciences de l'environnement/Environnement et Société
bordeaux.journalCatalysts
bordeaux.page827 (19 p.)
bordeaux.volume12
bordeaux.issue8
bordeaux.peerReviewedoui
hal.identifierhal-03778685
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03778685v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Catalysts&amp;rft.date=2022&amp;rft.volume=12&amp;rft.issue=8&amp;rft.spage=827%20(19%20p.)&amp;rft.epage=827%20(19%20p.)&amp;rft.eissn=2073-4344&amp;rft.issn=2073-4344&amp;rft.au=FAHED,%20Simon&amp;POINTECOUTEAU,%20R%C3%A9my&amp;AOUINE,%20M.&amp;BOREAVE,%20A.&amp;GIL,%20S.&amp;rft.genre=article


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